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NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 8133 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 1 PID: 8133 Comm: syz.0.1408 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Code: 8f 72 05 01 48 8b 5c 24 20 48 89 df e8 5c f2 e3 ff 48 c7 c7 c0 46 22 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 03 62 b0 01 <0f> 0b e9 51 fe ff ff e8 d7 34 74 f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000dd0af0 EFLAGS: 00010246
RAX: 5ac5305d713da600 RBX: ffff88805afb0448 RCX: ffff88807a159dc0
RDX: 0000000000000100 RSI: 0000000000000102 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000dd0627 R09: 1ffff920001ba0c4
R10: dffffc0000000000 R11: fffff520001ba0c5 R12: 0000000000000000
R13: ffff88805afb0540 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007fe0460f96c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c33c2bd CR3: 0000000022b42000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:check_kcov_mode kernel/kcov.c:174 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:227 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x2c/0x80 kernel/kcov.c:273
Code: 04 24 65 48 8b 0d 24 71 89 7e 65 8b 15 25 71 89 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 34 16 00 00 00 74 4e <8b> 91 10 16 00 00 83 fa 03 75 43 48 8b 91 18 16 00 00 44 8b 89 14
RSP: 0018:ffffc9000407f970 EFLAGS: 00000246
RAX: ffffffff83c5036d RBX: ffff888020a11260 RCX: ffff88807a159dc0
RDX: 0000000000000000 RSI: 00000000000000c5 RDI: 0000000000000051
RBP: 0000000000000030 R08: ffffc9000407fb9f R09: 1ffff9200080ff73
R10: dffffc0000000000 R11: fffff5200080ff74 R12: ffff888020a11258
R13: dffffc0000000000 R14: 1ffff1100414224c R15: ffffc9000407fb90
 jent_memaccess+0xed/0x190 crypto/jitterentropy.c:481
 jent_measure_jitter+0x51/0xe0 crypto/jitterentropy.c:522
 jent_gen_entropy+0x32/0x70 crypto/jitterentropy.c:556
 jent_read_entropy+0x89/0x200 crypto/jitterentropy.c:602
 jent_kcapi_random+0xa5/0x1e0 crypto/jitterentropy-kcapi.c:153
 crypto_rng_generate include/crypto/rng.h:144 [inline]
 crypto_rng_get_bytes include/crypto/rng.h:163 [inline]
 drbg_seed+0x322/0x960 crypto/drbg.c:1175
 drbg_instantiate crypto/drbg.c:1585 [inline]
 drbg_kcapi_seed+0xaf9/0xf60 crypto/drbg.c:1960
 crypto_rng_reset+0x70/0x100 crypto/rng.c:49
 alg_setkey+0x138/0x170 crypto/af_alg.c:220
 alg_setsockopt+0x301/0x440 crypto/af_alg.c:253
 __sys_setsockopt+0x2bf/0x3d0 net/socket.c:2213
 __do_sys_setsockopt net/socket.c:2224 [inline]
 __se_sys_setsockopt net/socket.c:2221 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2221
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fe047ea10d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe0460f9028 EFLAGS: 00000246
 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007fe048128fa0 RCX: 00007fe047ea10d9
RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003
RBP: 00007fe047f38024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe048129038 R14: 00007fe048128fa0 R15: 00007fffd64db678
 </TASK>
----------------
Code disassembly (best guess):
   0:	04 24                	add    $0x24,%al
   2:	65 48 8b 0d 24 71 89 	mov    %gs:0x7e897124(%rip),%rcx        # 0x7e89712e
   9:	7e
   a:	65 8b 15 25 71 89 7e 	mov    %gs:0x7e897125(%rip),%edx        # 0x7e897136
  11:	81 e2 00 01 ff 00    	and    $0xff0100,%edx
  17:	74 11                	je     0x2a
  19:	81 fa 00 01 00 00    	cmp    $0x100,%edx
  1f:	75 57                	jne    0x78
  21:	83 b9 34 16 00 00 00 	cmpl   $0x0,0x1634(%rcx)
  28:	74 4e                	je     0x78
* 2a:	8b 91 10 16 00 00    	mov    0x1610(%rcx),%edx <-- trapping instruction
  30:	83 fa 03             	cmp    $0x3,%edx
  33:	75 43                	jne    0x78
  35:	48 8b 91 18 16 00 00 	mov    0x1618(%rcx),%rdx
  3c:	44                   	rex.R
  3d:	8b                   	.byte 0x8b
  3e:	89                   	.byte 0x89
  3f:	14                   	.byte 0x14